VFX and FX program competitors??

I’ve read the last leg in the competition for VFX (resulting in the F-14) was fougth for by Grumman, eventually the winner, and McDonnel Douglas. Did M&D ever built a prototype of its own proposal, or was the competition only a paper competition?

Same question in regards to the FX program, wich resulted in the F-15. Was there a prototype build by any competitor other than M&D?

Any pictures?? :confused:

King Jester

PD: I’m missing the monthly quizzes, Distiller, Arthur, SOC, please, by popular demand, bring the quizzes back!! 🙂